This was handy to learn what wasn't my problem. I traced my problem to the "flush or trap handle" after exploring the problem suggested by this video. Kohler has a mechanism that fits into a square hole on the outside of the toilet. The actual chrome handle has to be able to move through this mechanism in order to full and release the chain. After time the plastic mechanism can expand and tighten down on the small metallic pipe that actually goes from the handle to the metal (or plastic) rod that attaches to the flush chain. My fix was to gently drill out the plastic locking section of the "flush handle mechanism" so that the metal rod was no longer hanging up when used. This allowed the mechanism to work properly and no longer hang up when flushing the toilet. No more annoying running toilet. I haven't seen this mentioned on any other Kohler repair video so thought I'd post it here in case anyone want to update their presentations.

Thank you so much for the video! I’m a 71 year old grandma and just replaced the seal in our toilet, which took care of the constant running. The job was surprisingly easy thanks to your help.

Another Grandma here...that was SO satisfying to be able to fix! My old gasket was shredded! Took all of 2 minutes and most of that time was cleaning off the shredded gasket. Thank you so much for such a clear step by step.

No more running toilet keeping us up at night; literally, took five minutes to fix after watching your video. Thank u!

Cathy I repaired my toilet in exactly 5 min or less! Thank you so much. I had gone to HD to buy the ring, hoping it was what I needed. Thank you so much.

$10 for an Oring? Great informative video

Thank you very much. The job is simple enough but I was concerned about turning the inside part. It was very resistant and I was afraid the break it until I saw your video explaining why. The job is done and I saved $200. 😁

Thank you so much for this video. After a repair man quoted me $2700 for a new toilet (gtfo) I saw this, and changed out my o ring in literally a minute. $6 later no running toilet.

$10 for that little O-ring??? thank you for the great video

thank you! I want to share that the canister in my toilet was diffult to remove. I used dish soap and a little water and that help turned a quarter of a turn. Thanks for the video! I think it has stop running now after replacing the gasket, we’ll see

is it Normal in the centre piece there's a water coming out when refilling.

Where is the 5 min video on how to clean the rubber ring .Link is not on the top right corner of the screen like you said it is.

I change the rubber ring and the center piece and it's still running, any advice???

ugh thank you... i was like how the fuck do i get the ring on there? u have to turn it to detach it. !!!!

I’m embarrassed I’ve never seen a whole tower lift flush. I just have a rubber flapper no ring.

that little piece on the bottom snapped off very easily. absolutely garbage toilet.